[dpdk-dev] [RFC PATCH v3 3/3] drivers/net: use unmask API in interrupt handlers

Nithin Dabilpuram ndabilpuram at marvell.com
Tue Jul 16 18:44:24 CEST 2019


Replace rte_intr_enable() with rte_intr_unmask() API
for unmasking in interrupt handlers and rx_queue_intr_enable()
in callbacks of PMD's whose original intent was to unmask interrupts
after handling is completed if device is backed by UIO, IGB_UIO or
VFIO(with INTx).

Signed-off-by: Nithin Dabilpuram <ndabilpuram at marvell.com>
---

v3:
* Change all PMD's that use rte_intr_enable() in
  rx_queue_intr_enable() or in irq handler to use
  new unmask api.
  
 drivers/net/atlantic/atl_ethdev.c    |  2 +-
 drivers/net/avp/avp_ethdev.c         |  2 +-
 drivers/net/axgbe/axgbe_ethdev.c     |  4 ++--
 drivers/net/bnx2x/bnx2x_ethdev.c     |  2 +-
 drivers/net/e1000/em_ethdev.c        |  4 ++--
 drivers/net/e1000/igb_ethdev.c       |  6 +++---
 drivers/net/fm10k/fm10k_ethdev.c     |  6 +++---
 drivers/net/i40e/i40e_ethdev.c       |  2 +-
 drivers/net/iavf/iavf_ethdev.c       |  2 +-
 drivers/net/ice/ice_ethdev.c         |  4 ++--
 drivers/net/ixgbe/ixgbe_ethdev.c     |  6 +++---
 drivers/net/nfp/nfp_net.c            |  2 +-
 drivers/net/qede/qede_ethdev.c       |  8 ++++----
 drivers/net/sfc/sfc_intr.c           |  4 ++--
 drivers/net/virtio/virtio_ethdev.c   | 16 +++++++++++++++-
 drivers/net/vmxnet3/vmxnet3_ethdev.c |  2 +-
 16 files changed, 43 insertions(+), 29 deletions(-)

diff --git a/drivers/net/atlantic/atl_ethdev.c b/drivers/net/atlantic/atl_ethdev.c
index fdc0a7f..7d7cae1 100644
--- a/drivers/net/atlantic/atl_ethdev.c
+++ b/drivers/net/atlantic/atl_ethdev.c
@@ -1394,7 +1394,7 @@ atl_dev_interrupt_action(struct rte_eth_dev *dev,
 	}
 done:
 	atl_enable_intr(dev);
-	rte_intr_enable(intr_handle);
+	rte_intr_unmask(intr_handle);
 
 	return 0;
 }
diff --git a/drivers/net/avp/avp_ethdev.c b/drivers/net/avp/avp_ethdev.c
index 47b96ec..268316a 100644
--- a/drivers/net/avp/avp_ethdev.c
+++ b/drivers/net/avp/avp_ethdev.c
@@ -713,7 +713,7 @@ avp_dev_interrupt_handler(void *data)
 			    status);
 
 	/* re-enable UIO interrupt handling */
-	ret = rte_intr_enable(&pci_dev->intr_handle);
+	ret = rte_intr_unmask(&pci_dev->intr_handle);
 	if (ret < 0) {
 		PMD_DRV_LOG(ERR, "Failed to re-enable UIO interrupts, ret=%d\n",
 			    ret);
diff --git a/drivers/net/axgbe/axgbe_ethdev.c b/drivers/net/axgbe/axgbe_ethdev.c
index cfb1720..e25e323 100644
--- a/drivers/net/axgbe/axgbe_ethdev.c
+++ b/drivers/net/axgbe/axgbe_ethdev.c
@@ -136,8 +136,8 @@ axgbe_dev_interrupt_handler(void *param)
 					   DMA_CH_SR, dma_ch_isr);
 		}
 	}
-	/* Enable interrupts since disabled after generation*/
-	rte_intr_enable(&pdata->pci_dev->intr_handle);
+	/* Unmask interrupts since disabled after generation*/
+	rte_intr_unmask(&pdata->pci_dev->intr_handle);
 }
 
 /*
diff --git a/drivers/net/bnx2x/bnx2x_ethdev.c b/drivers/net/bnx2x/bnx2x_ethdev.c
index 10b4fdb..7ce6800 100644
--- a/drivers/net/bnx2x/bnx2x_ethdev.c
+++ b/drivers/net/bnx2x/bnx2x_ethdev.c
@@ -133,7 +133,7 @@ bnx2x_interrupt_handler(void *param)
 	PMD_DEBUG_PERIODIC_LOG(INFO, sc, "Interrupt handled");
 
 	bnx2x_interrupt_action(dev, 1);
-	rte_intr_enable(&sc->pci_dev->intr_handle);
+	rte_intr_unmask(&sc->pci_dev->intr_handle);
 }
 
 static void bnx2x_periodic_start(void *param)
diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c
index dc88661..7bff3d2 100644
--- a/drivers/net/e1000/em_ethdev.c
+++ b/drivers/net/e1000/em_ethdev.c
@@ -1001,7 +1001,7 @@ eth_em_rx_queue_intr_enable(struct rte_eth_dev *dev, __rte_unused uint16_t queue
 	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
 
 	em_rxq_intr_enable(hw);
-	rte_intr_enable(intr_handle);
+	rte_intr_unmask(intr_handle);
 
 	return 0;
 }
@@ -1568,7 +1568,7 @@ eth_em_interrupt_action(struct rte_eth_dev *dev,
 		return -1;
 
 	intr->flags &= ~E1000_FLAG_NEED_LINK_UPDATE;
-	rte_intr_enable(intr_handle);
+	rte_intr_unmask(intr_handle);
 
 	/* set get_link_status to check register later */
 	hw->mac.get_link_status = 1;
diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index 3ee28cf..b8ac00d 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -2876,7 +2876,7 @@ eth_igb_interrupt_action(struct rte_eth_dev *dev,
 	}
 
 	igb_intr_enable(dev);
-	rte_intr_enable(intr_handle);
+	rte_intr_unmask(intr_handle);
 
 	if (intr->flags & E1000_FLAG_NEED_LINK_UPDATE) {
 		intr->flags &= ~E1000_FLAG_NEED_LINK_UPDATE;
@@ -2987,7 +2987,7 @@ eth_igbvf_interrupt_action(struct rte_eth_dev *dev, struct rte_intr_handle *intr
 	}
 
 	igbvf_intr_enable(dev);
-	rte_intr_enable(intr_handle);
+	rte_intr_unmask(intr_handle);
 
 	return 0;
 }
@@ -5500,7 +5500,7 @@ eth_igb_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
 	E1000_WRITE_REG(hw, E1000_EIMS, regval | mask);
 	E1000_WRITE_FLUSH(hw);
 
-	rte_intr_enable(intr_handle);
+	rte_intr_unmask(intr_handle);
 
 	return 0;
 }
diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index a1e3836..4b30c52 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -2381,7 +2381,7 @@ fm10k_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
 	else
 		FM10K_WRITE_REG(hw, FM10K_VFITR(Q2V(pdev, queue_id)),
 			FM10K_ITR_AUTOMASK | FM10K_ITR_MASK_CLEAR);
-	rte_intr_enable(&pdev->intr_handle);
+	rte_intr_unmask(&pdev->intr_handle);
 	return 0;
 }
 
@@ -2680,7 +2680,7 @@ fm10k_dev_interrupt_handler_pf(void *param)
 	FM10K_WRITE_REG(hw, FM10K_ITR(0), FM10K_ITR_AUTOMASK |
 					FM10K_ITR_MASK_CLEAR);
 	/* Re-enable interrupt from host side */
-	rte_intr_enable(dev->intr_handle);
+	rte_intr_unmask(dev->intr_handle);
 }
 
 /**
@@ -2760,7 +2760,7 @@ fm10k_dev_interrupt_handler_vf(void *param)
 	FM10K_WRITE_REG(hw, FM10K_VFITR(0), FM10K_ITR_AUTOMASK |
 					FM10K_ITR_MASK_CLEAR);
 	/* Re-enable interrupt from host side */
-	rte_intr_enable(dev->intr_handle);
+	rte_intr_unmask(dev->intr_handle);
 }
 
 /* Mailbox message handler in VF */
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 2b9fc45..14af840 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -11646,7 +11646,7 @@ i40e_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
 			       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK);
 
 	I40E_WRITE_FLUSH(hw);
-	rte_intr_enable(&pci_dev->intr_handle);
+	rte_intr_unmask(&pci_dev->intr_handle);
 
 	return 0;
 }
diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index 53dc05c..fe97a26 100644
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -1098,7 +1098,7 @@ iavf_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
 
 	IAVF_WRITE_FLUSH(hw);
 
-	rte_intr_enable(&pci_dev->intr_handle);
+	rte_intr_unmask(&pci_dev->intr_handle);
 
 	return 0;
 }
diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 9ce730c..c070f20 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -1118,7 +1118,7 @@ ice_interrupt_handler(void *param)
 done:
 	/* Enable interrupt */
 	ice_pf_enable_irq0(hw);
-	rte_intr_enable(dev->intr_handle);
+	rte_intr_unmask(dev->intr_handle);
 }
 
 /*  Initialize SW parameters of PF */
@@ -3002,7 +3002,7 @@ static int ice_rx_queue_intr_enable(struct rte_eth_dev *dev,
 	val &= ~GLINT_DYN_CTL_WB_ON_ITR_M;
 
 	ICE_WRITE_REG(hw, GLINT_DYN_CTL(msix_intr), val);
-	rte_intr_enable(&pci_dev->intr_handle);
+	rte_intr_unmask(&pci_dev->intr_handle);
 
 	return 0;
 }
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 22c5b2c..be7472e 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -4502,7 +4502,7 @@ ixgbe_dev_interrupt_delayed_handler(void *param)
 
 	PMD_DRV_LOG(DEBUG, "enable intr in delayed handler S[%08x]", eicr);
 	ixgbe_enable_intr(dev);
-	rte_intr_enable(intr_handle);
+	rte_intr_unmask(intr_handle);
 }
 
 /**
@@ -5763,7 +5763,7 @@ ixgbevf_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
 	RTE_SET_USED(queue_id);
 	IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, intr->mask);
 
-	rte_intr_enable(intr_handle);
+	rte_intr_unmask(intr_handle);
 
 	return 0;
 }
@@ -5812,7 +5812,7 @@ ixgbe_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
 		mask &= (1 << (queue_id - 32));
 		IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask);
 	}
-	rte_intr_enable(intr_handle);
+	rte_intr_unmask(intr_handle);
 
 	return 0;
 }
diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 1a7aa17..5484d31 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -1412,7 +1412,7 @@ nfp_net_irq_unmask(struct rte_eth_dev *dev)
 	if (hw->ctrl & NFP_NET_CFG_CTRL_MSIXAUTO) {
 		/* If MSI-X auto-masking is used, clear the entry */
 		rte_wmb();
-		rte_intr_enable(&pci_dev->intr_handle);
+		rte_intr_unmask(&pci_dev->intr_handle);
 	} else {
 		/* Make sure all updates are written before un-masking */
 		rte_wmb();
diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index 82363e6..6648139 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -248,8 +248,8 @@ qede_interrupt_handler_intx(void *param)
 	if (status & 0x1) {
 		qede_interrupt_action(ECORE_LEADING_HWFN(edev));
 
-		if (rte_intr_enable(eth_dev->intr_handle))
-			DP_ERR(edev, "rte_intr_enable failed\n");
+		if (rte_intr_unmask(eth_dev->intr_handle))
+			DP_ERR(edev, "rte_intr_unmask failed\n");
 	}
 }
 
@@ -261,8 +261,8 @@ qede_interrupt_handler(void *param)
 	struct ecore_dev *edev = &qdev->edev;
 
 	qede_interrupt_action(ECORE_LEADING_HWFN(edev));
-	if (rte_intr_enable(eth_dev->intr_handle))
-		DP_ERR(edev, "rte_intr_enable failed\n");
+	if (rte_intr_unmask(eth_dev->intr_handle))
+		DP_ERR(edev, "rte_intr_unmask failed\n");
 }
 
 static void
diff --git a/drivers/net/sfc/sfc_intr.c b/drivers/net/sfc/sfc_intr.c
index 1f4969b..08f2057 100644
--- a/drivers/net/sfc/sfc_intr.c
+++ b/drivers/net/sfc/sfc_intr.c
@@ -79,7 +79,7 @@ sfc_intr_line_handler(void *cb_arg)
 	if (qmask & (1 << sa->mgmt_evq_index))
 		sfc_intr_handle_mgmt_evq(sa);
 
-	if (rte_intr_enable(&pci_dev->intr_handle) != 0)
+	if (rte_intr_unmask(&pci_dev->intr_handle) != 0)
 		sfc_err(sa, "cannot reenable interrupts");
 
 	sfc_log_init(sa, "done");
@@ -123,7 +123,7 @@ sfc_intr_message_handler(void *cb_arg)
 
 	sfc_intr_handle_mgmt_evq(sa);
 
-	if (rte_intr_enable(&pci_dev->intr_handle) != 0)
+	if (rte_intr_unmask(&pci_dev->intr_handle) != 0)
 		sfc_err(sa, "cannot reenable interrupts");
 
 	sfc_log_init(sa, "done");
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 04aecb7..81e4a48 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1265,6 +1265,20 @@ virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
 }
 
 static int
+virtio_intr_unmask(struct rte_eth_dev *dev)
+{
+	struct virtio_hw *hw = dev->data->dev_private;
+
+	if (rte_intr_unmask(dev->intr_handle) < 0)
+		return -1;
+
+	if (!hw->virtio_user_dev)
+		hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
+
+	return 0;
+}
+
+static int
 virtio_intr_enable(struct rte_eth_dev *dev)
 {
 	struct virtio_hw *hw = dev->data->dev_private;
@@ -1457,7 +1471,7 @@ virtio_interrupt_handler(void *param)
 	isr = vtpci_isr(hw);
 	PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
 
-	if (virtio_intr_enable(dev) < 0)
+	if (virtio_intr_unmask(dev) < 0)
 		PMD_DRV_LOG(ERR, "interrupt enable failed");
 
 	if (isr & VIRTIO_PCI_ISR_CONFIG) {
diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c b/drivers/net/vmxnet3/vmxnet3_ethdev.c
index 2b1e915..641c846 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethdev.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c
@@ -1426,7 +1426,7 @@ vmxnet3_interrupt_handler(void *param)
 
 	vmxnet3_process_events(dev);
 
-	if (rte_intr_enable(&pci_dev->intr_handle) < 0)
+	if (rte_intr_unmask(&pci_dev->intr_handle) < 0)
 		PMD_DRV_LOG(ERR, "interrupt enable failed");
 }
 
-- 
2.8.4



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